Test against dev version of analyzer on travis

[email protected]

Review URL: https://codereview.chromium.org/2203583004 .

Author: vsmenon

pkg/dev_compiler/.travis.yml

@@ -8,7 +8,7 @@ cache:
     - $HOME/.pub-cache/hosted
     - node_modules
 before_install:
-  - test "$ANALYZER" != master || ./tool/override_analyzer_dependency.sh
+  - test "$ANALYZER" != master -a "$ANALYZER" != dev || ./tool/override_analyzer_dependency.sh $ANALYZER
   - pub global activate dart_coveralls
   - export CHROME_CANARY_BIN=`./tool/get_chrome_canary.sh`
   - export DISPLAY=:99.0
@@ -23,9 +23,11 @@ script:
 env:
   - ANALYZER=stable
   - ANALYZER=master
+  - ANALYZER=dev
   - TEST=coverage
   - TEST=node
 matrix:
   allow_failures:
     - env: ANALYZER=master
+    - env: ANALYZER=dev
     - env: TEST=node

pkg/dev_compiler/tool/override_analyzer_dependency.sh

@@ -5,4 +5,4 @@ cd $( dirname "${BASH_SOURCE[0]}" )/..
 . ./tool/dependency_overrides.sh
 
 checkout_dependency_override_from_github \
-  analyzer dart-lang/sdk master /pkg/analyzer/
+  analyzer dart-lang/sdk $1 /pkg/analyzer/